Doubletree



E. M LAUGHLIN Feb. 26, 1935.

DOUBLETREE Filed Jan. 22, 1954 7 9 I "'@-I 6v E AA . general rule single trees Patented Feb. 26, 1935 SIPATEN OFFICE DOUBLETREE 1 EdisonMcLaughlin, Wen-dell, Idaho Application January 22,

1 Claim.

tree such as is used as an appurtenance and part of draft means employed in connection with vehicles drawn by beasts of burden, especially horses. 1

It is a matter of common knowledge that as a structed of wood or equivalent material and are usually in the nature of a pivotally mounted bar equipped with rings or equivalent fasteners at its ends for connection of traces and the like. The present invention has transcends in structural features the commonly accepted type of doubletree. i

In accomplishing this improved result I have evolved and produced simple and economical device constructed from rod metal, that is from a single length of metal bent upon itself to provide the coacting features necessary in the perfection of a device capable of accomplishing the desired results. I

Other features and advantages will become more readily apparent from the following de-.

scription and drawing.

In the drawing: Figure 1 is a top plan view of a doubletree constructed in accordance with the principles of the present invention.

Figure 2 is an edge elevational v Figure 3 isa perspective view. Figure 4 is a transverse centralized sectional iew thereof.

view taken approximately on the plane of the line 44 of Figure 1.

Referringnow to the drawing by distinguishing? observed from Figreference numerals it will be ures 1 and 3 that the device as a unit is somewhat in the nature of alenticular truss. It is fashioned from asingle length of rod metal, the rod being of appropriate tensile strength and proportion and the major portion thereof being bent into a longitudinally curved how 5. This, in a. sense, is the intermediate part of the metal. The end portions of the bow arebent upon themselves to form draft connecting eyes 6, although these eyes may well be slit (not shown) to form hooks for more conveniently attaching and detaching tracefasteners. The free end portions of the metal are then formed into what may be designated as return bends and directed inwardly toward each other in somewhat divergent relationship. These end portions aredifferentiated by the numerals '7 and are welded or otherwise connected as indicated at 8 to the ends of the main bow 5 for sake of maintaining shape and rigidity. In

and doubletrees are con.

been developed with the thought in mind of providing a structure which the doubletree on a vehicle or A careful consideration of the foregoing deshape, size, relative ing loop.

1934, Serial No. 707,799 (Cl. 278-433) This invention relates to an improved double.

a sense these return bends 7;are more in the nature of braces and when coordinated with'the how 5 afford the requisite rigidity for. the device as a whole. The adjacent end of the braces 7 are. disposed-in overlapping relation and welded 5. or otherwise connected together as indicated at 9. Then two terminals 10 and 11 are bent at right angles and into spaced parallelism with respect to each other and anchored as at 12 to the intermediate part of the bow 5. nals 10 and'll cooperate with the braces 7 and adioined portion of the bow 5 in defining what may be designated as an attaching loop or adapter 13. .This provides for convenient mounting of conveyance.

The gist of the invention is predicated upon the formation of the doubletree from a single length of metal bent upon itselfto form a-bow 5 intermediate its ends, a pair ofend attaching eyes 6, and a pair of inturned companion braces '7 having their adjacent ends. overlapped and secured togetherand their terminals 10 and 11 bent to cooperate in defining the adapter loop 13. Thus constructed the device is characterized by simplicity, economy and dependabilityinconstruction 25 and provides a novel contribution to the trade and art. It is immaterial whether the eyes 6 are disposed in a plane with a bow 5 or bent up at right angles with respect thereto.

'scription in conjunction with the illustrative drawing will enable the reader to obtain a clear understanding of the purpose, features and advantages, the explicit construction, and the invention as hereinafter claimed. 1 V

is to be understood that minor changes in proportions, and materials may be resorted to in practice without departing from the spirit of the invention or the scope of the invention as now claimed.

Having thus descr'bed my invention, what I claim as new is: i

As an article of manufacture a lenticular truss-type double-tree formed from one, piece of metal bent upon itself to define a longitudinally curved front bow, a pair of forwardly extending eyes at the ends of said how, a pair of duplicate rearwardly diverging braces extending inwardly toward eachother from said eyes and secured together in overlapping relationship, the terminals of said braces being bent forwardly into spaced parallelism and anchored to the intermediate portion ofsaidbow to define an attach- EDISON MCLAUGHLIN.

Thus the termi- 10 

